Feeding mechanism for sewing-machines



No, 232,010. Patented Sept. 7,1880.

N. PETERS, FNOTO-LITHOGRAPHER, WASIHNGTON n, 2v

UrTn STATES PATENT OFFIQEQ HENRY E. DIETERLE, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF OF HIS RIGHT TO GUSTAV BANDELOVV, OF SAME PLACE; SAID DIETERLE AND BANDELOVV ASSIGNORS TO FRANK MACK, OF CLEVELAND, OHIO.

FEEDING MECHANISM FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 232,010, dated September 7, 1880.

Application filed February 25, 1880.

To all whom it may concern:

Be it known that I, HENRY E. DIn'rEaLE, of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvementsin Feeding Mechanism for Sewing-Machines; and I hereby dc clare the following to be a full, clear, and exact description thereof, reference beinghad to the accompanying drawings, of which-- Figure l is a side elevation, partly in seetion, of a sewing-machine embodying my improvements; Fig. 2, a plan view of my improvement and its connections, the bed-plate of the machine being indicated by dotted lines; and

Figs. 8, 4., 5, 6,. and 7, detail views.

My invention relates to mechanism for imparting a four-movement to a feed-bar; and my object is to communicate all four of the movements to the feed-bar by means of a single lever and a spring.

The specification of my shuttle-actuating mechanism, which forms the subject of Letters Patent of the United States No. 218,811, dated August 20,1879, accurately describes 2 5 so much of my present device as relates to the imparting to the feed-lever of two of its four movementsviz., the forward and back movements-for it will be seen that the lever G, which actuates the feed-lever P, is mounted side by side with the lever B, which actuates the shuttle-lever L; also, that it is supported by means of a ball, D, embraced between the concave ends of threaded pins M, that it is forked at its upper end to receive an actuat- 3 5 ing-cam, H, on the driving-shaft A; and that the joint E at its lower end, which connects it with the feed-lever P, consists of a ball sitting within a circular hole extending through the end of the said lever, all these parts ac- 4o cording literally with the corresponding parts of the shuttle-actuating mechanism, as shown in the patent above referred to.

It is desirable, however, to make the cam H triangular instead of circular, like the eecentric Gr, in order that the feed T, when in the act of rising or falling, may be at rest with respect to the forward and back movements. So far, therefore, as my feed-actuating mechanism operates to produce the forward and back movement of the feed-bar, it consists 5o merely of a new application of the mechanism described and claimed in my said former Letters Patent, and accordingly no claim is made to it herein, save in its relation to other parts, to which I am about to refer.

The principal novelty of my present invention lies in the means by which I obtain the other two movements of the feed-bar T-viz the upward and the downward-all from the same lever P, and this I shall now proceed to describe.

Upon the side of the fulcrum point of the shuttle-lever I form a short horizontal projection, terminating in a ball, N, which sits and slides within a circular hole, J, formed horizontally through the lever P, and of such diameter as just to receive the said ball. Thus the vibration on its fulcrum of the lever L causes the ball N to vibrate in a short are, and to impart to the lever P a longitudinally- 7o reciprocating motion.

The lever P has its fulcrum at the point of its connection to the stitch-regulator It, (in which it also slides back and forth to the extent of its longitudinal reciprocatiou,) and not 7 5 at its point of connection to the lever L. As a consequence, at each vibration induced by the lever (J it moves in and out upon the ball N. This it is obviously perfectly free to do without in the least affecting the regularity of the longitudinally-reciprocating action imparted to it by the vibrating ball N, and almost without friction, owing to the smoothness and ease with which the joint operates.

S is a hearing at the outer end of the bed of the machine, upon which the lever P rests and slides. Near its outer extremity the said lever is provided on its upper side with a wedged projection, a, which sits within a notch formed in the feed-bar T. Thus the lateral o vibration of the said lever P, imparted to it by the lever O, communicates to the feed its forward and back movement, while the longitudinal reciprocation imparted by the vibrating shuttlelever communicates through the me- 5 dium of the wedged projection a the required upward movement.

The feed upon being raised is carried down tion at will of the relative lengths of the arms of the said lever, and hence of the sweep of the short arm which carries the feed, and the feed-plate is provided with a slot, and is secured to its bearings by a pin passing through the slot to give it the requisite play, all in the usual manner. 1

Theseveral levers are slotted inward from their sockets and forks, an d provided with setscrews a near the outer ends of the said slots to permit their accurate adjustment to the various balls or eccentrics, as the case" may be.

From the foregoing description it will readily be seen that, important as the universal joint at the point of suspension of the actuating-lever is in the case of the shuttle mechanism, it is even more so in that of the feed mechanism, owing to the additional movement to which the actuating-lever is required in the latter case to accommodate itself, and hence of its more extensive vibrationthat is to say, in the case of the lever B the lateral sliding of the fork upon the eccentric G is only in proportion to the are described by the end of the lever L, while in the case of the lever G the sliding of the fork upon the cam H is necessarily much greater, being in proportion to the longitudinally-reciprocating movement of the lever P. The joint, moreover, is required to adapt itself to a much more complicated movement in the latter case than in the former, though this circumstance does not in the smallest degree impair or affect the action of the device.

What I claim as new, and desire to secure by Letters Patent, is

1. The feed-lever P, provided with the round hole J, extending horizontally through it, in combination with the vibrating shuttle-lever L, provided at its fulcrum-point with a rigid horizontal projection, the ball N, fixed upon the said projection and sitting within the hole J, mechanism for imparting to the said feedlever a lateral vibrating movement, and the feed-bar T, substantially as described, and for the purpose set forth.

2. The combination of the feed-lever P, provided with a round hole, J, as shown, vibrating shuttle-lever L, provided at its fulcrumpoint with a rigid horizontal projection, ball N upon the said projection and. sitting within the hole J, stitch-regulator Pt, feed-bar T, actuating-lever 0, connected to the said feedlever by the joint E, and provided at its point of suspension with the ball 1), supporting- )ins M havin concave ends to receive the ball D, and mechanism for vibrating the said lever O, substantially as described.

HENRY E. DIETERLE.

In presence of- P. O. DYRENFORTH, GUSTAV BANDELow. 

